"The digitalizations in the present investigation are limited to those with
a nominal height of 21 raster units...  [T]his size is believed to be
adequate for all characters in Nelson's dictionary except No. 5444.
Inasmuch as this character represents dragons in motion, it is of doubtful
utility."

    Allen V. Hershey, "Calligraphy for Computers", U.S. Naval Weapons
    Laboratory Report #2101, August 1967.
